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4 years ago

5

Determine whether the underlined number describes a population parameter or a sample statistic. Explain your reasoning. Modifyin

g Sixty minus five with underline of the 97 passengers aboard an airship survived an explosion.

1 answer:

torisob [31]4 years ago

8 0

Answer:

Step-by-step explanation:

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If he rows with the current, Mishka rows 48 km in 3 hours. If he rows against the current, it takes 4 hours to travel the same d

Zarrin [17]

<h2>Mishka's speed = 14 km/hr</h2><h2>Current speed = 2 km/hr</h2>

Step-by-step explanation:

Let the speed of rowing be r and speed of current be c.

If he rows with the current, Mishka rows 48 km in 3 hours.

Relative speed = r + c

Distance = 48 km

Time = 3 hours

48 = 3 x ( r+c)

r + c = 16 ---------------------------eqn 1

If he rows against the current, it takes 4 hours to travel the same distance.

Relative speed = r - c

Distance = 48 km

Time = 4 hours

48 = 4 x ( r - c)

r - c = 12 ---------------------------eqn 2

eqn 1 + eqn 2

2r = 28

r = 14 km/hr

Substituting in eqn 1

14 + c = 16

c = 2 km/hr

Mishka's speed = 14 km/hr

Current speed = 2 km/hr

6 0

3 years ago

Use the table from a random survey about the preferred service for streaming movies. Out of 750 people, how many would you expec

LiRa [457]

Answer:

The correct answer option is 192

Step-by-step explanation:

We are given the results of a random survey about the preferred service for streaming movies.

We are to find the number of people we would expect to prefer Company B.

Number of people using service B = 32

Total number of people = 125

Number of people expected to prefer Company B =32/125 x 750 = 192

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2 years ago

Heyy! i’ll give brainliest please help

nydimaria [60]

The answer is absolute dictator

8 0

3 years ago

Find and compare the median and

Over [174]

Answer:

Median= $2.45/2

=$1.225

Mode= $2.87

3 0

3 years ago

One month Ravi rented4 movies and8video games for a total of $57 The next month he rented2 movies and3 video games for a total o

e-lub [12.9K]

SOLUTION

Given the question in the question tab, the following are the solution steps to get the rental cost for each movie and each video game.

Step 1: Write the representation for the two rentals

Let m represents movies

Let v represent video games

Step 2: Write the statements in form of a mathematical equation

$\begin{gathered} \text{Month 1: }4m+8v=57 \\ \text{Month 2: }2m+3v=23 \end{gathered}$

Step 3: Solve the equations above simultaneously using elimination method to get the values of m and v

$\begin{gathered} 4m+8v=57----(1) \\ 2m+3v=23----(2) \\ \text{ multiply equation 1 by 2 and equation 2 by }4 \\ 8m+16v=114----(3) \\ 8m+12v=92----(4) \\ \text{subtract equation (4) from equation (3)} \\ 4v=22 \\ v=\frac{22}{4}=5.5 \\ \text{Substitute 5.5 for v in equation 1 to get the value of m} \\ 4m+8v=57 \\ 4m+8(5.5)=57 \\ 4m+44=57 \\ 4m=57-44=13 \\ m=\frac{13}{4}=3.25 \\ m=\text{\$}3.25,v=\text{\$}5.50 \end{gathered}$

Rental cost for each movies is $3.25

Rental cost for each video games $5.50

8 0

2 years ago